Scroll down to the 95th row, select the whole row, and tab over to column B.

Go to Help/About, hold ctrl-alt-shift, and click on the tech support button.

This process spawns a window with a graphical interface quite similar to that of Doom and Doom II. You can walk around using the arrow keys and look up and down using C and D. At the end of the corridor there is a list of the tortured souls, who are in fact the programmers who worked on Microsoft Excel. Turn around 180 degrees at this point and type in EXCELKFA (a parody of IDKFA, the cheat code in Doom for all keys, weapons, and full ammo). You can now walk through the wall, where you will be confronted with a zig-zag bridge. If you manage to traverse this bridge, you will be rewarded with a room containing pictures of the development team for Excel.